Bio 152- Plants Questions with Complete Solutions

Importance of plants Correct Answer-food, natural products, ecosystem services (oxygen, ozone, coal), culture Preadaptations of Charophytes Correct Answer-fresh water spores covered in sporopollenin, life cycle allows dispersal by wind (spores) Gametophyte Correct Answer-haploid (n), makes gametes by mitosis Sporophyte Correct Answer-diploid (2n), makes spores by meiosis Alternation of Generations Correct Answer-Gametophytes go through mitosis to create gametes, which form zygote, zygote undergoes mitosis to create sporophyte, sporophyte undergoes meiosis to create spores, spores undergo mitosis to form gametophytes Antheridia Correct Answer-on male gametophyte, sterile jacket of cells, sperm have 2 anterior flagella Archegonia Correct Answer-on female gametophyte, one egg cell surrounded by the venter